Sprocket-wheel



(No Model.)

J. R. HERSH 8u J; M. STALBY. SPROGKEIWHBBL.

N10.- 402,448. PatentedApr. 30, 1889.

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UNITED STATES PATENT OFFICE.

JOHN R. HERSH AND JAMES M. STALEY, OF DAYTON, OHIO.

SPROCKET-WH EEL.

SPECIFICATION forming part Of Letters Patent N0. 402,448, dated April30, 1889.

Application tiled February 12, 1889. Serial No. 299,605. (No model.)

To all whom it may concern: f

Be it known that We, JOHN R. HERSH and Y JAMES M. STALEY, citizens ofthe United IoA this specification, and tothe letters and iig- I ures ofreference marked thereon.

This invention relates to certain new and useful improvements insprocket-Wheels, and has for its object to provide a wheel of thischaracter in which the teeth are removably secured to the other parts ofthe Wheel in such a manner that the teeth may be readily removed andreplaced by new ones when they become Worn or' broken; and the noveltyin the present instance resides in the peculiarities of construction andthe combinations, arrangement, and adaptation of parts, lall as morefully hereinafter described, shown in the drawings, and thenparticularly pointed out in the appended claims.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form apart of thisspecification, and in which- Figure l is a' plan view of asprocket-Wheel embodying our invention. Fig. 2 is a cent-ral sectionthrough the same.

Referring now to the details of` the drawings by letter, A designates ahub of suitable size and provided with a central opening, a, to receivethe shaft. From this hub extend the spokes l), terminating at the outerends in the rim @which is formed with the shoulder Cl and aninwardly-extending annular recess, e, adapted to receive the toe or lugf of the ring B, which is provided with the teeth g, the inner edge ofsaid ring resting on and bearing against the outer face of the rimv andagainst the shoulder d, as shown clearly in Fig. 2. Y

O is a detachable ring corresponding in shape to the rim c, and issecured in place by the bolts or rivetsor other analogous fastenings, D,which extend through said ring, the ring B, and the rim c. The ring Cbears against the sideof the ring B and also against the side of therim, and when drawn tight by the bolts or rivets securely holds the ringB in place and forces the toe of the ring B into the recess in the rim cof the web, and the said toe thus serves to hold the ring B againstdisplacement. The said recess has an inclined side, h, and the toe aninclined side, as shown at e', in order to enable the parts to readilyassume the desired position as they are drawn together.

It will be seen that a Wheel constructed as above described can bereadily made up of the parts forming the same, and should the teethbecome worn or any of them be broken a new ring can be easily andquickly put in place of the broken one.

What we claim as new is Y 1. The combination, with the hub and its rimformed with shoulder d and recess e, of the ring B, formed with a toe,f, the retainingring, and the securing-bolts, substantially asdescribed.

V2. The combination, with the hub and its rim formed with shoulder d andrecess e, provided With inclined side, of the ring provided with teethand with a toe having an inclined side, the retaining-ring bearingagainst the toothed ring and the side of the rim, and the bolts orrivets passed through the retainingring, the ring, and the rim of thehub, subst-antially as shown and described.

In testimony that We claim the above We u have hereunto subscribed ournames in the presence of two witnesses.

JOHN R. HERSH. JAMES M. STALEY.

Witnesses:

S. Burns J oNEs, CHAs. A. WALTMIRE.

